Surface structure of a component of a medical device and a method of forming the surface structure
AssigneeCook Medical Technologies LLC
InventorsSteven J Charlebois, William Kurt Dierking, David E. Orr
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Abstract
A method of forming a surface structure of a component of a medical devices includes forming a fatigue-resistant portion, which entails forming a first layer comprising a transition metal selected from the group consisting of Ta, Nb, Mo, V, Mn, Fe, Cr, Co, Ni, Cu, and Si on at least a portion of a surface of the component, where the surface comprises a nickel-titanium alloy, and alloying the transition metal of the first layer with the nickel-titanium alloy of the surface. The method further includes forming a rough outer surface of the fatigue-resistant portion where the rough outer surface is adapted for adhesion of a material thereto.
Claims9
A surface structure of a component of a medical device, the surface structure comprising:
- a fatigue-resistant portion comprising a heat treated layer disposed on at least a portion of a surface of the component, the surface comprising a nickel-titanium alloy and the heat treated layer comprising a transition metal selected from the group consisting of Ta, Nb, Mo, V, Mn, Fe, Cr, Co, Ni, Cu, and Si;
- and
- a rough outer surface of the fatigue-resistant portion, the rough outer surface having an average roughness in the range of from about 150 microns to about 350 microns.
Dependencies are inferred from the claim text.